Dobek AS, Klayman DL, Dickson ET, Scovill JP, Tramont EC. Inhibition of clinically significant bacterial organisms in vitro by 2-acetylpyridine thiosemicarbazones.
Antimicrob Agents Chemother 1980;
18:27-36. [PMID:
7416748 PMCID:
PMC283934 DOI:
10.1128/aac.18.1.27]
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Abstract
Antibacterial activity of 65 2-acetylpyridine thiosemicarbazones and related compounds was determined by using clinical isolates of nine bacterial genera. Minimal inhibitory concentrations (MICs) of 0.002 to 0.062 micrograms/ml were obtained with 23% of the compounds for Neisseria gonorrhoeae and 0.016 to 0.062 micrograms/ml with 17% of the compounds for N. meningitidis. Staphylococcus aureus was inhibited in the MIC range of 0.125 to 0.5 micrograms/ml by 18% of the thiosemicarbazones, whereas 26% inhibited group D enterococcus with an MIC of 0.25 to 2.0 micrograms/ml. Poor antibacterial activity was shown toward the gram-negative bacilli, i.e., Pseudomonas, Klebsiella-Enterobacter, Shigella, Escherichia coli, and Proteus.
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